| 联合多种测高数据确定中国边缘海及全球海域的垂线偏差 |
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| 引用本文： | 王虎彪, 王勇, 陆洋. 联合多种测高数据确定中国边缘海及全球海域的垂线偏差[J]. 武汉大学学报 ( 信息科学版), 2007, 32(9): 770-773. |
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| 作者姓名： | 王虎彪 王勇 陆洋 |
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| 作者单位： | 1 中国科学院测量与地球物理研究所动力大地测量学重点实验室,武汉市徐东大街340号,4300772 中国科学院研究生院,北京市石景山区玉泉路甲19号,100039 |
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| 摘 要： | 联合多种测高资料,基于EIGEN_CG01C重力场模型,采用沿轨迹加权最小二乘方法确定了中国边缘海和全球海域格网垂线偏差(IGG2006_DOV),中国海域整体精度优于1.2″,满足了反演高分辨率、高精度海洋重力场对测高垂线偏差的精度要求。在南海海域,基于测高垂线偏差解算的重力异常与船测重力进行了外部检核,精度达到7.75 mGal。
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| 关 键 词： | 卫星测高 沿轨迹 加权最小二乘 垂线偏差 |
| 文章编号： | 1671-8860（2007）09-0770-04 |
| 收稿时间： | 2007-06-25 |
| 修稿时间： | 2007-06-25 |
High Precision Vertical Deflection over China Marginal Sea and Global Sea Derived from Multi-satellite Altimeter |
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| WANG Hubiao, WANG Yong, LU Yang. High Precision Vertical Deflection over China Marginal Sea and Global Sea Derived from Multi-satellite Altimeter[J]. Geomatics and Information Science of Wuhan University, 2007, 32(9): 770-773. |
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| Authors: | WANG Hubiao WANG Yong LU Yang |
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| Affiliation: | 1 Institute of Geodesy and Geophysics,Chinese Academy of Sciences,340 Xudong Street,Wuhan 430077,China;2 Graduate School of Chinese Academy of Sciences,A19 Yuquan Road,Beijing 100039,China |
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| Abstract: | On the basis of gravity field model(EIGEN_CG01C),together with multi-altimeter data,the improved deflection of the vertical gridded in 2′×2′ in China marginal sea and gridded in 5′×5′ in the global sea are determined using the weighted method of along-track least squares,and the accuracy is better than 1.2″ in China marginal sea.As for the quality of the deflection of the vertical,it meets the challenge for the gravity field of high resolution and accuracy.It shows that,compared with the shipboard gravimetry in the sea,the accuracy of the gravity anomalies computed with the marine deflection of the vertical by inverse Vening-Meinesz formula is 7.75 mGal. |
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| Keywords: | altimetry along-track the weighted least-squares deflection of the vertical |
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